Abstract:

Wastewater from dairy production has been treated by air floatation-ABR-biological contact oxidation.The removal rates of COD_Cr and BOD₅ can reach 95% and 98%，when the influent COD_Cr=1 400 mg/L, BOD₅=840mg/L, SS=500 mg/L and pH=4.5. The indexes of the effluent COD_Cr, BOD₅, SS and pH can all meet the requirements of the first class of Integrated Wastewater Discharge Standard（GB 8978—1996）.

Key words: air floatation, anaerobic baffled reactor, biological contact oxidation, wastewater from dairy production

摘要：

采用气浮—ABR—生物接触氧化工艺处理乳制品废水。在进水COD_Cr为1 400 mg/L、BOD₅为840 mg/L、SS为500 mg/L和pH=4.5的条件下,COD_Cr和BOD₅的去除率分别达到95%和98%。出水COD_Cr、BOD₅、SS和pH均达到《污水综合排放标准》(GB 8978—1996)一级排放要求。

关键词: 气浮, 厌氧折流板反应器, 生物接触氧化, 乳制品废水

CLC Number: 

• X703.1